The Mixed Refrigerant(MR)component is an important factor influencing the performances of natural gas lique-faction processes.However,there is a lack of systematic research about the utilization of propane pre-cooled(...The Mixed Refrigerant(MR)component is an important factor influencing the performances of natural gas lique-faction processes.However,there is a lack of systematic research about the utilization of propane pre-cooled(C3/MRC).In this paper,this mixed refrigerant cycle liquefaction process is simulated using the HYSYS software and the main influential parameters involved in the process are varied to analyze their influence on the liquefaction rate and power consumption.The results show that an effective way for lowering the power consumption of the compressor consists of reducing the flow through the compressor through optimization of the percentage of mixed refrigerant.The power consumption of the compressor in the hybrid refrigeration process is affected by both flow and pressure ratios.Its specific power consumption can be reduced by increasing the flow and decreasing the pressure ratio at the same time.The increase in refrigerant pressure at the high-pressure end can significantly mitigate the energy loss of the heat exchanger and compressor.展开更多
Liquefied natural gas(LNG)is an important energy source and occupies an important proportion in natural gas consumption,therefore,the selection of appropriate liquefaction processes and related optimization should be ...Liquefied natural gas(LNG)is an important energy source and occupies an important proportion in natural gas consumption,therefore,the selection of appropriate liquefaction processes and related optimization should be seen as subjects of great importance.Accordingly,in the present review,we provide a comparative and critical analysis of the current status of natural gas liquefaction technology through examination of the advantages and disadvantages associated with three natural gas liquefaction processes(namely,the cascade liquefaction cycle,the expander-based cycle and the mixed refrigerant cycle).It is shown that the energy consumption related to the cascade refrigeration cycle is the lowest.Compared with it,the mixed refrigerant cycle has the advantages of being a simpler process,with less units,low investment cost and low requirements in terms of refrigerant purity.The expander-based cycle can be started and stopped quickly and simply,but the power consumption is relatively high.展开更多
基金supported by the Science Development Funding Program of Dongying of China(Grant No.DJ2021006)Science Development Funding Program of Dongying of China(Grant No.DJ2021008).
文摘The Mixed Refrigerant(MR)component is an important factor influencing the performances of natural gas lique-faction processes.However,there is a lack of systematic research about the utilization of propane pre-cooled(C3/MRC).In this paper,this mixed refrigerant cycle liquefaction process is simulated using the HYSYS software and the main influential parameters involved in the process are varied to analyze their influence on the liquefaction rate and power consumption.The results show that an effective way for lowering the power consumption of the compressor consists of reducing the flow through the compressor through optimization of the percentage of mixed refrigerant.The power consumption of the compressor in the hybrid refrigeration process is affected by both flow and pressure ratios.Its specific power consumption can be reduced by increasing the flow and decreasing the pressure ratio at the same time.The increase in refrigerant pressure at the high-pressure end can significantly mitigate the energy loss of the heat exchanger and compressor.
基金This work was supported by the Science Development Funding Program of Dongying of China(Grant No.DJ2020009).
文摘Liquefied natural gas(LNG)is an important energy source and occupies an important proportion in natural gas consumption,therefore,the selection of appropriate liquefaction processes and related optimization should be seen as subjects of great importance.Accordingly,in the present review,we provide a comparative and critical analysis of the current status of natural gas liquefaction technology through examination of the advantages and disadvantages associated with three natural gas liquefaction processes(namely,the cascade liquefaction cycle,the expander-based cycle and the mixed refrigerant cycle).It is shown that the energy consumption related to the cascade refrigeration cycle is the lowest.Compared with it,the mixed refrigerant cycle has the advantages of being a simpler process,with less units,low investment cost and low requirements in terms of refrigerant purity.The expander-based cycle can be started and stopped quickly and simply,but the power consumption is relatively high.
